Ford CP4 to DCR Conversion for 6.7L PowerStroke

WARNING: CP4 Pump Failure Can Lead to Major Fuel System damage

The Bosch CP4 pump is used across many diesel platforms — and while Bosch remains a trusted name in fuel system engineering, the CP4 has shown consistent reliability issues when used in the 6.7L PowerStroke.

These failures aren’t just rare anomalies. In the PowerStroke platform, a CP4 failure can send metal debris through your entire fuel system — damaging injectors, lines, and more. We've seen trucks come in needing over $10,000 in repairs and facing weeks of downtime, all because of a pump failure that happened without warning.

The CP4-to-DCR conversion is more than an upgrade — it’s the most widely trusted preventative measure. Thousands of PowerStroke owners have already made the switch to avoid failure and protect their engines for the long haul.

If your 6.7L is still running a CP4, it’s worth asking: what would one sudden failure cost you?

wHY DCR OVER CP4?

At Diesel David Inc., we recommend the DCR high-pressure fuel pump as a proven, long-term reliability solution for the 6.7L PowerStroke. Designed as a direct, plug-and-play replacement, the DCR requires no tuning, offers OE-level fitment, and maintains full emissions compliance. Built with a forged steel housing, pressure-lubricated bushings, and an eccentric drive design, the DCR minimizes internal friction and helps prevent fuel system contamination in demanding operating conditions. It’s a trusted upgrade for PowerStroke owners looking for added durability and peace of mind — and it’s a product we proudly stand behind.

Eliminates CP4 Failure Risk

OEM Fit — No Tuning Required

Improved Performance and Longevity

Fully Emissions-Compliant + Warranty-Backed

BUILT TO WORK BUILT TO LAST

The Ford 6.7L DCR pump conversion is designed for trucks that see real-world, heavy-duty use. This plug-and-play upgrade replaces the factory CP4 pump with a robust two-piston DCR pump, offering OE-level fitment, no ECU calibration required, and full emissions compliance. Co-developed by S&S Diesel and PurePower, the DCR pump features patented eccentric drive technology and pressure-lubricated components engineered to perform reliably in demanding conditions, including low-lubricity fuel environments. Backed by a two-year, unlimited-mile warranty, this conversion is a smart long-term investment for PowerStroke owners who depend on their trucks every day.